/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/weaver/unroll-5.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 02:16:10,879 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 02:16:10,930 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-27 02:16:10,934 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 02:16:10,935 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 02:16:10,956 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 02:16:10,957 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 02:16:10,957 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 02:16:10,958 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 02:16:10,958 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 02:16:10,958 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 02:16:10,959 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 02:16:10,959 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 02:16:10,959 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 02:16:10,960 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 02:16:10,960 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 02:16:10,960 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 02:16:10,965 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 02:16:10,965 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 02:16:10,966 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 02:16:10,966 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 02:16:10,969 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 02:16:10,969 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 02:16:10,970 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 02:16:10,970 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 02:16:10,970 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 02:16:10,970 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 02:16:10,971 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 02:16:10,971 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 02:16:10,971 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 02:16:10,971 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 02:16:10,972 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 02:16:10,972 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 02:16:10,972 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 02:16:10,973 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 02:16:10,973 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 02:16:11,291 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 02:16:11,314 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 02:16:11,316 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 02:16:11,318 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 02:16:11,318 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 02:16:11,319 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/unroll-5.wvr.c [2023-08-27 02:16:12,483 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 02:16:12,710 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 02:16:12,711 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-5.wvr.c [2023-08-27 02:16:12,718 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df065f9e8/e4406b97443b40d98e8bfcd6a8445a45/FLAG82faf16e5 [2023-08-27 02:16:12,729 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df065f9e8/e4406b97443b40d98e8bfcd6a8445a45 [2023-08-27 02:16:12,731 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 02:16:12,732 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 02:16:12,733 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 02:16:12,733 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 02:16:12,736 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 02:16:12,736 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 02:16:12" (1/1) ... [2023-08-27 02:16:12,737 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70af6e30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:16:12, skipping insertion in model container [2023-08-27 02:16:12,737 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 02:16:12" (1/1) ... [2023-08-27 02:16:12,758 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 02:16:12,948 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 02:16:12,958 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 02:16:12,984 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 02:16:12,995 INFO L206 MainTranslator]: Completed translation [2023-08-27 02:16:12,995 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:16:12 WrapperNode [2023-08-27 02:16:12,996 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 02:16:12,996 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 02:16:12,997 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 02:16:12,997 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 02:16:13,001 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:16:12" (1/1) ... [2023-08-27 02:16:13,007 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:16:12" (1/1) ... [2023-08-27 02:16:13,030 INFO L138 Inliner]: procedures = 24, calls = 39, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 172 [2023-08-27 02:16:13,030 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 02:16:13,031 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 02:16:13,031 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 02:16:13,031 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 02:16:13,039 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:16:12" (1/1) ... [2023-08-27 02:16:13,039 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:16:12" (1/1) ... [2023-08-27 02:16:13,042 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:16:12" (1/1) ... [2023-08-27 02:16:13,042 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:16:12" (1/1) ... [2023-08-27 02:16:13,059 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:16:12" (1/1) ... [2023-08-27 02:16:13,063 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:16:12" (1/1) ... [2023-08-27 02:16:13,065 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:16:12" (1/1) ... [2023-08-27 02:16:13,067 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:16:12" (1/1) ... [2023-08-27 02:16:13,069 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 02:16:13,070 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 02:16:13,070 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 02:16:13,071 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 02:16:13,071 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:16:12" (1/1) ... [2023-08-27 02:16:13,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 02:16:13,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:16:13,100 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-27 02:16:13,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-27 02:16:13,140 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 02:16:13,140 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 02:16:13,141 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 02:16:13,141 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 02:16:13,141 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 02:16:13,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 02:16:13,141 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 02:16:13,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 02:16:13,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-27 02:16:13,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 02:16:13,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 02:16:13,142 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 02:16:13,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 02:16:13,144 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-27 02:16:13,227 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 02:16:13,229 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 02:16:13,625 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 02:16:13,636 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 02:16:13,637 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-27 02:16:13,639 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 02:16:13 BoogieIcfgContainer [2023-08-27 02:16:13,639 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 02:16:13,644 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 02:16:13,644 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 02:16:13,648 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 02:16:13,648 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 02:16:12" (1/3) ... [2023-08-27 02:16:13,649 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@137d178 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 02:16:13, skipping insertion in model container [2023-08-27 02:16:13,649 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:16:12" (2/3) ... [2023-08-27 02:16:13,649 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@137d178 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 02:16:13, skipping insertion in model container [2023-08-27 02:16:13,649 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 02:16:13" (3/3) ... [2023-08-27 02:16:13,650 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-5.wvr.c [2023-08-27 02:16:13,667 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 02:16:13,667 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-08-27 02:16:13,668 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 02:16:13,785 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-27 02:16:13,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 192 places, 202 transitions, 420 flow [2023-08-27 02:16:13,925 INFO L124 PetriNetUnfolderBase]: 17/200 cut-off events. [2023-08-27 02:16:13,926 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 02:16:13,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209 conditions, 200 events. 17/200 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 180 event pairs, 0 based on Foata normal form. 0/180 useless extension candidates. Maximal degree in co-relation 105. Up to 2 conditions per place. [2023-08-27 02:16:13,932 INFO L82 GeneralOperation]: Start removeDead. Operand has 192 places, 202 transitions, 420 flow [2023-08-27 02:16:13,949 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 181 places, 191 transitions, 394 flow [2023-08-27 02:16:13,952 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 02:16:13,963 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 181 places, 191 transitions, 394 flow [2023-08-27 02:16:13,966 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 181 places, 191 transitions, 394 flow [2023-08-27 02:16:13,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 181 places, 191 transitions, 394 flow [2023-08-27 02:16:14,020 INFO L124 PetriNetUnfolderBase]: 17/191 cut-off events. [2023-08-27 02:16:14,020 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 02:16:14,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 191 events. 17/191 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 159 event pairs, 0 based on Foata normal form. 0/172 useless extension candidates. Maximal degree in co-relation 105. Up to 2 conditions per place. [2023-08-27 02:16:14,026 INFO L119 LiptonReduction]: Number of co-enabled transitions 3892 [2023-08-27 02:16:19,497 INFO L134 LiptonReduction]: Checked pairs total: 3818 [2023-08-27 02:16:19,497 INFO L136 LiptonReduction]: Total number of compositions: 230 [2023-08-27 02:16:19,509 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 02:16:19,514 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@575e7db8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 02:16:19,514 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-27 02:16:19,516 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 02:16:19,516 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-08-27 02:16:19,516 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 02:16:19,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:16:19,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-27 02:16:19,517 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 2 more)] === [2023-08-27 02:16:19,521 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:16:19,521 INFO L85 PathProgramCache]: Analyzing trace with hash 26497, now seen corresponding path program 1 times [2023-08-27 02:16:19,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:16:19,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102553399] [2023-08-27 02:16:19,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:16:19,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:16:19,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:16:19,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:16:19,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:16:19,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102553399] [2023-08-27 02:16:19,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102553399] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:16:19,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:16:19,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 02:16:19,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224927230] [2023-08-27 02:16:19,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:16:19,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:16:19,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:16:19,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:16:19,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:16:19,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 432 [2023-08-27 02:16:19,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 19 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 175.66666666666666) internal successors, (527), 3 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:16:19,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:16:19,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 432 [2023-08-27 02:16:19,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:16:19,948 INFO L124 PetriNetUnfolderBase]: 46/83 cut-off events. [2023-08-27 02:16:19,948 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-27 02:16:19,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 83 events. 46/83 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 178 event pairs, 18 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 120. Up to 79 conditions per place. [2023-08-27 02:16:19,952 INFO L140 encePairwiseOnDemand]: 427/432 looper letters, 16 selfloop transitions, 3 changer transitions 0/21 dead transitions. [2023-08-27 02:16:19,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 21 transitions, 92 flow [2023-08-27 02:16:19,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:16:19,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:16:19,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 546 transitions. [2023-08-27 02:16:19,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4212962962962963 [2023-08-27 02:16:19,974 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 546 transitions. [2023-08-27 02:16:19,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 546 transitions. [2023-08-27 02:16:19,978 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:16:19,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 546 transitions. [2023-08-27 02:16:19,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 182.0) internal successors, (546), 3 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:16:19,996 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 432.0) internal successors, (1728), 4 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:16:19,998 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 432.0) internal successors, (1728), 4 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:16:20,000 INFO L175 Difference]: Start difference. First operand has 23 places, 19 transitions, 50 flow. Second operand 3 states and 546 transitions. [2023-08-27 02:16:20,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 21 transitions, 92 flow [2023-08-27 02:16:20,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 21 transitions, 84 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 02:16:20,005 INFO L231 Difference]: Finished difference. Result has 22 places, 21 transitions, 63 flow [2023-08-27 02:16:20,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=432, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=63, PETRI_PLACES=22, PETRI_TRANSITIONS=21} [2023-08-27 02:16:20,011 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, -1 predicate places. [2023-08-27 02:16:20,011 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 21 transitions, 63 flow [2023-08-27 02:16:20,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.66666666666666) internal successors, (527), 3 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:16:20,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:16:20,012 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 02:16:20,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 02:16:20,012 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 2 more)] === [2023-08-27 02:16:20,020 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:16:20,020 INFO L85 PathProgramCache]: Analyzing trace with hash 822639, now seen corresponding path program 1 times [2023-08-27 02:16:20,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:16:20,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692276878] [2023-08-27 02:16:20,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:16:20,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:16:20,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:16:20,146 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:16:20,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:16:20,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692276878] [2023-08-27 02:16:20,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692276878] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:16:20,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225590915] [2023-08-27 02:16:20,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:16:20,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:16:20,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:16:20,153 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 02:16:20,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-27 02:16:20,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:16:20,237 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 02:16:20,240 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:16:20,270 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:16:20,270 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:16:20,288 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:16:20,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [225590915] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:16:20,289 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:16:20,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-27 02:16:20,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109830899] [2023-08-27 02:16:20,290 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:16:20,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 02:16:20,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:16:20,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 02:16:20,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 02:16:20,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 432 [2023-08-27 02:16:20,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 21 transitions, 63 flow. Second operand has 7 states, 7 states have (on average 176.14285714285714) internal successors, (1233), 7 states have internal predecessors, (1233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:16:20,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:16:20,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 432 [2023-08-27 02:16:20,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:16:20,349 INFO L124 PetriNetUnfolderBase]: 52/92 cut-off events. [2023-08-27 02:16:20,350 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 02:16:20,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 206 conditions, 92 events. 52/92 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 216 event pairs, 18 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 152. Up to 81 conditions per place. [2023-08-27 02:16:20,351 INFO L140 encePairwiseOnDemand]: 427/432 looper letters, 15 selfloop transitions, 13 changer transitions 0/30 dead transitions. [2023-08-27 02:16:20,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 30 transitions, 155 flow [2023-08-27 02:16:20,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 02:16:20,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 02:16:20,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1256 transitions. [2023-08-27 02:16:20,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41534391534391535 [2023-08-27 02:16:20,355 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1256 transitions. [2023-08-27 02:16:20,355 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1256 transitions. [2023-08-27 02:16:20,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:16:20,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1256 transitions. [2023-08-27 02:16:20,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 179.42857142857142) internal successors, (1256), 7 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:16:20,363 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 432.0) internal successors, (3456), 8 states have internal predecessors, (3456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:16:20,365 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 432.0) internal successors, (3456), 8 states have internal predecessors, (3456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:16:20,365 INFO L175 Difference]: Start difference. First operand has 22 places, 21 transitions, 63 flow. Second operand 7 states and 1256 transitions. [2023-08-27 02:16:20,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 30 transitions, 155 flow [2023-08-27 02:16:20,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 30 transitions, 150 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-27 02:16:20,367 INFO L231 Difference]: Finished difference. Result has 30 places, 30 transitions, 142 flow [2023-08-27 02:16:20,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=432, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=142, PETRI_PLACES=30, PETRI_TRANSITIONS=30} [2023-08-27 02:16:20,368 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 7 predicate places. [2023-08-27 02:16:20,368 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 30 transitions, 142 flow [2023-08-27 02:16:20,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 176.14285714285714) internal successors, (1233), 7 states have internal predecessors, (1233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:16:20,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:16:20,369 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-08-27 02:16:20,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-27 02:16:20,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:16:20,575 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 2 more)] === [2023-08-27 02:16:20,575 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:16:20,575 INFO L85 PathProgramCache]: Analyzing trace with hash 25503042, now seen corresponding path program 1 times [2023-08-27 02:16:20,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:16:20,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077957657] [2023-08-27 02:16:20,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:16:20,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:16:20,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:16:20,673 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:16:20,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:16:20,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077957657] [2023-08-27 02:16:20,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077957657] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:16:20,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841210175] [2023-08-27 02:16:20,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:16:20,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:16:20,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:16:20,680 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 02:16:20,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-27 02:16:20,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:16:20,779 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-27 02:16:20,780 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:16:20,797 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:16:20,798 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 02:16:20,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [841210175] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:16:20,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 02:16:20,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-27 02:16:20,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008409065] [2023-08-27 02:16:20,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:16:20,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 02:16:20,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:16:20,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 02:16:20,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-27 02:16:20,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 432 [2023-08-27 02:16:20,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 30 transitions, 142 flow. Second operand has 5 states, 5 states have (on average 175.8) internal successors, (879), 5 states have internal predecessors, (879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:16:20,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:16:20,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 432 [2023-08-27 02:16:20,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:16:20,877 INFO L124 PetriNetUnfolderBase]: 49/88 cut-off events. [2023-08-27 02:16:20,877 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 02:16:20,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214 conditions, 88 events. 49/88 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 208 event pairs, 18 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 178. Up to 78 conditions per place. [2023-08-27 02:16:20,878 INFO L140 encePairwiseOnDemand]: 428/432 looper letters, 16 selfloop transitions, 8 changer transitions 0/26 dead transitions. [2023-08-27 02:16:20,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 26 transitions, 163 flow [2023-08-27 02:16:20,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 02:16:20,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 02:16:20,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 897 transitions. [2023-08-27 02:16:20,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4152777777777778 [2023-08-27 02:16:20,881 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 897 transitions. [2023-08-27 02:16:20,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 897 transitions. [2023-08-27 02:16:20,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:16:20,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 897 transitions. [2023-08-27 02:16:20,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 179.4) internal successors, (897), 5 states have internal predecessors, (897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:16:20,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 432.0) internal successors, (2592), 6 states have internal predecessors, (2592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:16:20,888 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 432.0) internal successors, (2592), 6 states have internal predecessors, (2592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:16:20,888 INFO L175 Difference]: Start difference. First operand has 30 places, 30 transitions, 142 flow. Second operand 5 states and 897 transitions. [2023-08-27 02:16:20,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 26 transitions, 163 flow [2023-08-27 02:16:20,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 26 transitions, 142 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-08-27 02:16:20,890 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 110 flow [2023-08-27 02:16:20,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=432, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=110, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2023-08-27 02:16:20,891 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 8 predicate places. [2023-08-27 02:16:20,891 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 110 flow [2023-08-27 02:16:20,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 175.8) internal successors, (879), 5 states have internal predecessors, (879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:16:20,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:16:20,892 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-27 02:16:20,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-27 02:16:21,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-08-27 02:16:21,098 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 2 more)] === [2023-08-27 02:16:21,099 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:16:21,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1261341951, now seen corresponding path program 2 times [2023-08-27 02:16:21,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:16:21,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10225227] [2023-08-27 02:16:21,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:16:21,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:16:21,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:16:21,228 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:16:21,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:16:21,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10225227] [2023-08-27 02:16:21,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10225227] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:16:21,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303927163] [2023-08-27 02:16:21,229 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 02:16:21,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:16:21,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:16:21,230 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 02:16:21,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-27 02:16:21,292 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 02:16:21,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 02:16:21,293 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 02:16:21,294 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:16:21,311 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-27 02:16:21,311 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 02:16:21,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303927163] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:16:21,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 02:16:21,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-27 02:16:21,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626086244] [2023-08-27 02:16:21,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:16:21,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:16:21,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:16:21,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:16:21,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-27 02:16:21,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 432 [2023-08-27 02:16:21,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:16:21,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:16:21,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 432 [2023-08-27 02:16:21,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:16:21,347 INFO L124 PetriNetUnfolderBase]: 49/87 cut-off events. [2023-08-27 02:16:21,347 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-08-27 02:16:21,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207 conditions, 87 events. 49/87 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 185 event pairs, 18 based on Foata normal form. 1/59 useless extension candidates. Maximal degree in co-relation 179. Up to 83 conditions per place. [2023-08-27 02:16:21,348 INFO L140 encePairwiseOnDemand]: 430/432 looper letters, 22 selfloop transitions, 1 changer transitions 0/25 dead transitions. [2023-08-27 02:16:21,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 25 transitions, 146 flow [2023-08-27 02:16:21,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:16:21,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:16:21,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 544 transitions. [2023-08-27 02:16:21,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41975308641975306 [2023-08-27 02:16:21,350 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 544 transitions. [2023-08-27 02:16:21,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 544 transitions. [2023-08-27 02:16:21,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:16:21,350 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 544 transitions. [2023-08-27 02:16:21,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 181.33333333333334) internal successors, (544), 3 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:16:21,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 432.0) internal successors, (1728), 4 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:16:21,355 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 432.0) internal successors, (1728), 4 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:16:21,355 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 110 flow. Second operand 3 states and 544 transitions. [2023-08-27 02:16:21,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 25 transitions, 146 flow [2023-08-27 02:16:21,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 25 transitions, 118 flow, removed 2 selfloop flow, removed 7 redundant places. [2023-08-27 02:16:21,357 INFO L231 Difference]: Finished difference. Result has 25 places, 25 transitions, 74 flow [2023-08-27 02:16:21,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=432, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=25, PETRI_TRANSITIONS=25} [2023-08-27 02:16:21,357 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 2 predicate places. [2023-08-27 02:16:21,357 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 25 transitions, 74 flow [2023-08-27 02:16:21,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:16:21,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:16:21,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:16:21,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-27 02:16:21,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:16:21,565 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 2 more)] === [2023-08-27 02:16:21,566 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:16:21,566 INFO L85 PathProgramCache]: Analyzing trace with hash -2052101733, now seen corresponding path program 1 times [2023-08-27 02:16:21,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:16:21,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362936996] [2023-08-27 02:16:21,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:16:21,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:16:21,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:16:21,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:16:21,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:16:21,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362936996] [2023-08-27 02:16:21,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362936996] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:16:21,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:16:21,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 02:16:21,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418932183] [2023-08-27 02:16:21,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:16:21,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:16:21,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:16:21,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:16:21,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:16:21,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 432 [2023-08-27 02:16:21,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 25 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:16:21,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:16:21,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 432 [2023-08-27 02:16:21,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:16:21,709 INFO L124 PetriNetUnfolderBase]: 48/86 cut-off events. [2023-08-27 02:16:21,709 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 02:16:21,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184 conditions, 86 events. 48/86 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 188 event pairs, 18 based on Foata normal form. 1/58 useless extension candidates. Maximal degree in co-relation 176. Up to 82 conditions per place. [2023-08-27 02:16:21,710 INFO L140 encePairwiseOnDemand]: 429/432 looper letters, 20 selfloop transitions, 2 changer transitions 0/24 dead transitions. [2023-08-27 02:16:21,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 24 transitions, 114 flow [2023-08-27 02:16:21,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:16:21,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:16:21,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 530 transitions. [2023-08-27 02:16:21,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4089506172839506 [2023-08-27 02:16:21,712 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 530 transitions. [2023-08-27 02:16:21,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 530 transitions. [2023-08-27 02:16:21,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:16:21,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 530 transitions. [2023-08-27 02:16:21,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 176.66666666666666) internal successors, (530), 3 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:16:21,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 432.0) internal successors, (1728), 4 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:16:21,716 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 432.0) internal successors, (1728), 4 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:16:21,716 INFO L175 Difference]: Start difference. First operand has 25 places, 25 transitions, 74 flow. Second operand 3 states and 530 transitions. [2023-08-27 02:16:21,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 24 transitions, 114 flow [2023-08-27 02:16:21,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 24 transitions, 113 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 02:16:21,718 INFO L231 Difference]: Finished difference. Result has 26 places, 24 transitions, 73 flow [2023-08-27 02:16:21,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=432, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=26, PETRI_TRANSITIONS=24} [2023-08-27 02:16:21,718 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 3 predicate places. [2023-08-27 02:16:21,719 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 24 transitions, 73 flow [2023-08-27 02:16:21,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:16:21,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:16:21,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:16:21,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 02:16:21,719 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 2 more)] === [2023-08-27 02:16:21,720 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:16:21,720 INFO L85 PathProgramCache]: Analyzing trace with hash -2122573175, now seen corresponding path program 1 times [2023-08-27 02:16:21,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:16:21,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137355931] [2023-08-27 02:16:21,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:16:21,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:16:21,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:16:21,839 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 02:16:21,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:16:21,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137355931] [2023-08-27 02:16:21,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137355931] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:16:21,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:16:21,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 02:16:21,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431247325] [2023-08-27 02:16:21,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:16:21,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:16:21,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:16:21,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:16:21,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:16:21,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 432 [2023-08-27 02:16:21,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 24 transitions, 73 flow. Second operand has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:16:21,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:16:21,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 432 [2023-08-27 02:16:21,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:16:21,887 INFO L124 PetriNetUnfolderBase]: 69/123 cut-off events. [2023-08-27 02:16:21,907 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 02:16:21,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 262 conditions, 123 events. 69/123 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 326 event pairs, 9 based on Foata normal form. 1/84 useless extension candidates. Maximal degree in co-relation 253. Up to 85 conditions per place. [2023-08-27 02:16:21,908 INFO L140 encePairwiseOnDemand]: 428/432 looper letters, 28 selfloop transitions, 3 changer transitions 1/34 dead transitions. [2023-08-27 02:16:21,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 34 transitions, 160 flow [2023-08-27 02:16:21,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:16:21,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:16:21,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 512 transitions. [2023-08-27 02:16:21,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3950617283950617 [2023-08-27 02:16:21,910 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 512 transitions. [2023-08-27 02:16:21,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 512 transitions. [2023-08-27 02:16:21,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:16:21,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 512 transitions. [2023-08-27 02:16:21,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:16:21,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 432.0) internal successors, (1728), 4 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:16:21,915 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 432.0) internal successors, (1728), 4 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:16:21,915 INFO L175 Difference]: Start difference. First operand has 26 places, 24 transitions, 73 flow. Second operand 3 states and 512 transitions. [2023-08-27 02:16:21,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 34 transitions, 160 flow [2023-08-27 02:16:21,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 34 transitions, 156 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 02:16:21,917 INFO L231 Difference]: Finished difference. Result has 27 places, 26 transitions, 88 flow [2023-08-27 02:16:21,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=432, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=27, PETRI_TRANSITIONS=26} [2023-08-27 02:16:21,920 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 4 predicate places. [2023-08-27 02:16:21,920 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 26 transitions, 88 flow [2023-08-27 02:16:21,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:16:21,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:16:21,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:16:21,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 02:16:21,921 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 2 more)] === [2023-08-27 02:16:21,921 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:16:21,921 INFO L85 PathProgramCache]: Analyzing trace with hash -2094009394, now seen corresponding path program 1 times [2023-08-27 02:16:21,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:16:21,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479399052] [2023-08-27 02:16:21,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:16:21,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:16:21,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:16:22,001 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 02:16:22,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:16:22,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479399052] [2023-08-27 02:16:22,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479399052] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:16:22,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:16:22,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 02:16:22,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726476500] [2023-08-27 02:16:22,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:16:22,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 02:16:22,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:16:22,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 02:16:22,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 02:16:22,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 432 [2023-08-27 02:16:22,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 26 transitions, 88 flow. Second operand has 4 states, 4 states have (on average 168.75) internal successors, (675), 4 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:16:22,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:16:22,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 432 [2023-08-27 02:16:22,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:16:22,092 INFO L124 PetriNetUnfolderBase]: 83/155 cut-off events. [2023-08-27 02:16:22,092 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2023-08-27 02:16:22,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 382 conditions, 155 events. 83/155 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 471 event pairs, 23 based on Foata normal form. 4/159 useless extension candidates. Maximal degree in co-relation 372. Up to 100 conditions per place. [2023-08-27 02:16:22,093 INFO L140 encePairwiseOnDemand]: 428/432 looper letters, 35 selfloop transitions, 4 changer transitions 0/40 dead transitions. [2023-08-27 02:16:22,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 40 transitions, 206 flow [2023-08-27 02:16:22,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 02:16:22,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 02:16:22,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 690 transitions. [2023-08-27 02:16:22,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3993055555555556 [2023-08-27 02:16:22,095 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 690 transitions. [2023-08-27 02:16:22,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 690 transitions. [2023-08-27 02:16:22,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:16:22,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 690 transitions. [2023-08-27 02:16:22,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 172.5) internal successors, (690), 4 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:16:22,099 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 432.0) internal successors, (2160), 5 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:16:22,100 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 432.0) internal successors, (2160), 5 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:16:22,100 INFO L175 Difference]: Start difference. First operand has 27 places, 26 transitions, 88 flow. Second operand 4 states and 690 transitions. [2023-08-27 02:16:22,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 40 transitions, 206 flow [2023-08-27 02:16:22,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 40 transitions, 202 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 02:16:22,103 INFO L231 Difference]: Finished difference. Result has 31 places, 28 transitions, 112 flow [2023-08-27 02:16:22,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=432, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=112, PETRI_PLACES=31, PETRI_TRANSITIONS=28} [2023-08-27 02:16:22,104 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 8 predicate places. [2023-08-27 02:16:22,104 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 28 transitions, 112 flow [2023-08-27 02:16:22,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 168.75) internal successors, (675), 4 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:16:22,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:16:22,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:16:22,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 02:16:22,105 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 2 more)] === [2023-08-27 02:16:22,105 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:16:22,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1568265104, now seen corresponding path program 2 times [2023-08-27 02:16:22,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:16:22,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98893801] [2023-08-27 02:16:22,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:16:22,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:16:22,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:16:22,251 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 02:16:22,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:16:22,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98893801] [2023-08-27 02:16:22,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98893801] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:16:22,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688135140] [2023-08-27 02:16:22,253 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 02:16:22,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:16:22,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:16:22,254 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 02:16:22,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-27 02:16:22,349 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 02:16:22,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 02:16:22,351 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 02:16:22,352 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:16:22,396 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 02:16:22,396 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 02:16:22,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688135140] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:16:22,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 02:16:22,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2023-08-27 02:16:22,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548695197] [2023-08-27 02:16:22,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:16:22,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 02:16:22,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:16:22,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 02:16:22,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 02:16:22,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 432 [2023-08-27 02:16:22,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 28 transitions, 112 flow. Second operand has 4 states, 4 states have (on average 168.75) internal successors, (675), 4 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:16:22,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:16:22,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 432 [2023-08-27 02:16:22,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:16:22,473 INFO L124 PetriNetUnfolderBase]: 91/169 cut-off events. [2023-08-27 02:16:22,473 INFO L125 PetriNetUnfolderBase]: For 120/120 co-relation queries the response was YES. [2023-08-27 02:16:22,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 518 conditions, 169 events. 91/169 cut-off events. For 120/120 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 526 event pairs, 19 based on Foata normal form. 6/175 useless extension candidates. Maximal degree in co-relation 506. Up to 106 conditions per place. [2023-08-27 02:16:22,475 INFO L140 encePairwiseOnDemand]: 428/432 looper letters, 36 selfloop transitions, 4 changer transitions 2/43 dead transitions. [2023-08-27 02:16:22,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 43 transitions, 246 flow [2023-08-27 02:16:22,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 02:16:22,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 02:16:22,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 694 transitions. [2023-08-27 02:16:22,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40162037037037035 [2023-08-27 02:16:22,477 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 694 transitions. [2023-08-27 02:16:22,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 694 transitions. [2023-08-27 02:16:22,477 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:16:22,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 694 transitions. [2023-08-27 02:16:22,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 173.5) internal successors, (694), 4 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:16:22,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 432.0) internal successors, (2160), 5 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:16:22,482 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 432.0) internal successors, (2160), 5 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:16:22,482 INFO L175 Difference]: Start difference. First operand has 31 places, 28 transitions, 112 flow. Second operand 4 states and 694 transitions. [2023-08-27 02:16:22,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 43 transitions, 246 flow [2023-08-27 02:16:22,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 43 transitions, 235 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-27 02:16:22,484 INFO L231 Difference]: Finished difference. Result has 35 places, 30 transitions, 133 flow [2023-08-27 02:16:22,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=432, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=133, PETRI_PLACES=35, PETRI_TRANSITIONS=30} [2023-08-27 02:16:22,484 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 12 predicate places. [2023-08-27 02:16:22,485 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 30 transitions, 133 flow [2023-08-27 02:16:22,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 168.75) internal successors, (675), 4 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:16:22,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:16:22,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:16:22,500 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-27 02:16:22,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:16:22,700 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 2 more)] === [2023-08-27 02:16:22,701 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:16:22,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1639581326, now seen corresponding path program 3 times [2023-08-27 02:16:22,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:16:22,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545220141] [2023-08-27 02:16:22,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:16:22,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:16:22,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:16:22,815 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 02:16:22,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:16:22,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545220141] [2023-08-27 02:16:22,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545220141] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:16:22,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494515986] [2023-08-27 02:16:22,816 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 02:16:22,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:16:22,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:16:22,817 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 02:16:22,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-27 02:16:22,905 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-27 02:16:22,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 02:16:22,907 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 02:16:22,908 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:16:22,939 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 02:16:22,940 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 02:16:22,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494515986] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:16:22,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 02:16:22,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2023-08-27 02:16:22,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428152639] [2023-08-27 02:16:22,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:16:22,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 02:16:22,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:16:22,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 02:16:22,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 02:16:22,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 432 [2023-08-27 02:16:22,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 133 flow. Second operand has 4 states, 4 states have (on average 168.75) internal successors, (675), 4 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:16:22,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:16:22,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 432 [2023-08-27 02:16:22,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:16:23,002 INFO L124 PetriNetUnfolderBase]: 93/169 cut-off events. [2023-08-27 02:16:23,002 INFO L125 PetriNetUnfolderBase]: For 237/237 co-relation queries the response was YES. [2023-08-27 02:16:23,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 547 conditions, 169 events. 93/169 cut-off events. For 237/237 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 521 event pairs, 23 based on Foata normal form. 6/175 useless extension candidates. Maximal degree in co-relation 533. Up to 112 conditions per place. [2023-08-27 02:16:23,003 INFO L140 encePairwiseOnDemand]: 428/432 looper letters, 32 selfloop transitions, 8 changer transitions 2/43 dead transitions. [2023-08-27 02:16:23,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 43 transitions, 267 flow [2023-08-27 02:16:23,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 02:16:23,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 02:16:23,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 691 transitions. [2023-08-27 02:16:23,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39988425925925924 [2023-08-27 02:16:23,006 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 691 transitions. [2023-08-27 02:16:23,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 691 transitions. [2023-08-27 02:16:23,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:16:23,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 691 transitions. [2023-08-27 02:16:23,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 172.75) internal successors, (691), 4 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:16:23,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 432.0) internal successors, (2160), 5 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:16:23,011 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 432.0) internal successors, (2160), 5 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:16:23,011 INFO L175 Difference]: Start difference. First operand has 35 places, 30 transitions, 133 flow. Second operand 4 states and 691 transitions. [2023-08-27 02:16:23,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 43 transitions, 267 flow [2023-08-27 02:16:23,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 43 transitions, 258 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-27 02:16:23,013 INFO L231 Difference]: Finished difference. Result has 38 places, 32 transitions, 167 flow [2023-08-27 02:16:23,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=432, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=167, PETRI_PLACES=38, PETRI_TRANSITIONS=32} [2023-08-27 02:16:23,014 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 15 predicate places. [2023-08-27 02:16:23,014 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 32 transitions, 167 flow [2023-08-27 02:16:23,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 168.75) internal successors, (675), 4 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:16:23,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:16:23,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:16:23,023 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-27 02:16:23,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:16:23,221 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 2 more)] === [2023-08-27 02:16:23,221 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:16:23,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1180717303, now seen corresponding path program 1 times [2023-08-27 02:16:23,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:16:23,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136473751] [2023-08-27 02:16:23,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:16:23,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:16:23,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:16:23,302 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 02:16:23,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:16:23,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136473751] [2023-08-27 02:16:23,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136473751] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:16:23,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:16:23,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 02:16:23,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071012065] [2023-08-27 02:16:23,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:16:23,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 02:16:23,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:16:23,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 02:16:23,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 02:16:23,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 432 [2023-08-27 02:16:23,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 32 transitions, 167 flow. Second operand has 4 states, 4 states have (on average 176.75) internal successors, (707), 4 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:16:23,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:16:23,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 432 [2023-08-27 02:16:23,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:16:23,381 INFO L124 PetriNetUnfolderBase]: 84/160 cut-off events. [2023-08-27 02:16:23,382 INFO L125 PetriNetUnfolderBase]: For 311/333 co-relation queries the response was YES. [2023-08-27 02:16:23,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 538 conditions, 160 events. 84/160 cut-off events. For 311/333 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 492 event pairs, 24 based on Foata normal form. 21/178 useless extension candidates. Maximal degree in co-relation 523. Up to 115 conditions per place. [2023-08-27 02:16:23,383 INFO L140 encePairwiseOnDemand]: 428/432 looper letters, 39 selfloop transitions, 5 changer transitions 2/48 dead transitions. [2023-08-27 02:16:23,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 48 transitions, 316 flow [2023-08-27 02:16:23,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 02:16:23,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 02:16:23,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 724 transitions. [2023-08-27 02:16:23,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41898148148148145 [2023-08-27 02:16:23,386 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 724 transitions. [2023-08-27 02:16:23,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 724 transitions. [2023-08-27 02:16:23,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:16:23,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 724 transitions. [2023-08-27 02:16:23,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 181.0) internal successors, (724), 4 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:16:23,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 432.0) internal successors, (2160), 5 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:16:23,391 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 432.0) internal successors, (2160), 5 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:16:23,391 INFO L175 Difference]: Start difference. First operand has 38 places, 32 transitions, 167 flow. Second operand 4 states and 724 transitions. [2023-08-27 02:16:23,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 48 transitions, 316 flow [2023-08-27 02:16:23,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 48 transitions, 294 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-27 02:16:23,395 INFO L231 Difference]: Finished difference. Result has 39 places, 34 transitions, 181 flow [2023-08-27 02:16:23,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=432, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=181, PETRI_PLACES=39, PETRI_TRANSITIONS=34} [2023-08-27 02:16:23,396 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 16 predicate places. [2023-08-27 02:16:23,396 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 34 transitions, 181 flow [2023-08-27 02:16:23,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 176.75) internal successors, (707), 4 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:16:23,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:16:23,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:16:23,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 02:16:23,398 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 2 more)] === [2023-08-27 02:16:23,398 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:16:23,398 INFO L85 PathProgramCache]: Analyzing trace with hash 970700151, now seen corresponding path program 2 times [2023-08-27 02:16:23,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:16:23,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214963112] [2023-08-27 02:16:23,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:16:23,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:16:23,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:16:23,513 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 02:16:23,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:16:23,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214963112] [2023-08-27 02:16:23,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214963112] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:16:23,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856499292] [2023-08-27 02:16:23,514 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 02:16:23,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:16:23,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:16:23,517 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 02:16:23,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-27 02:16:23,610 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 02:16:23,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 02:16:23,612 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 02:16:23,613 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:16:23,640 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 02:16:23,640 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:16:23,689 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 02:16:23,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856499292] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-27 02:16:23,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-27 02:16:23,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 6 [2023-08-27 02:16:23,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957748054] [2023-08-27 02:16:23,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:16:23,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 02:16:23,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:16:23,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 02:16:23,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-27 02:16:23,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 432 [2023-08-27 02:16:23,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 34 transitions, 181 flow. Second operand has 4 states, 4 states have (on average 176.75) internal successors, (707), 4 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:16:23,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:16:23,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 432 [2023-08-27 02:16:23,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:16:23,774 INFO L124 PetriNetUnfolderBase]: 90/173 cut-off events. [2023-08-27 02:16:23,775 INFO L125 PetriNetUnfolderBase]: For 270/278 co-relation queries the response was YES. [2023-08-27 02:16:23,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 643 conditions, 173 events. 90/173 cut-off events. For 270/278 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 519 event pairs, 18 based on Foata normal form. 10/178 useless extension candidates. Maximal degree in co-relation 627. Up to 128 conditions per place. [2023-08-27 02:16:23,776 INFO L140 encePairwiseOnDemand]: 428/432 looper letters, 35 selfloop transitions, 5 changer transitions 3/45 dead transitions. [2023-08-27 02:16:23,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 45 transitions, 313 flow [2023-08-27 02:16:23,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 02:16:23,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 02:16:23,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 722 transitions. [2023-08-27 02:16:23,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41782407407407407 [2023-08-27 02:16:23,779 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 722 transitions. [2023-08-27 02:16:23,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 722 transitions. [2023-08-27 02:16:23,779 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:16:23,779 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 722 transitions. [2023-08-27 02:16:23,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 180.5) internal successors, (722), 4 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:16:23,783 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 432.0) internal successors, (2160), 5 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:16:23,783 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 432.0) internal successors, (2160), 5 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:16:23,784 INFO L175 Difference]: Start difference. First operand has 39 places, 34 transitions, 181 flow. Second operand 4 states and 722 transitions. [2023-08-27 02:16:23,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 45 transitions, 313 flow [2023-08-27 02:16:23,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 45 transitions, 299 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-27 02:16:23,786 INFO L231 Difference]: Finished difference. Result has 43 places, 36 transitions, 204 flow [2023-08-27 02:16:23,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=432, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=204, PETRI_PLACES=43, PETRI_TRANSITIONS=36} [2023-08-27 02:16:23,786 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 20 predicate places. [2023-08-27 02:16:23,786 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 36 transitions, 204 flow [2023-08-27 02:16:23,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 176.75) internal successors, (707), 4 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:16:23,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:16:23,787 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:16:23,796 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-27 02:16:23,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:16:23,993 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 2 more)] === [2023-08-27 02:16:23,993 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:16:23,993 INFO L85 PathProgramCache]: Analyzing trace with hash -140098009, now seen corresponding path program 3 times [2023-08-27 02:16:23,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:16:23,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837640689] [2023-08-27 02:16:23,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:16:23,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:16:24,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:16:24,131 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 02:16:24,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:16:24,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837640689] [2023-08-27 02:16:24,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837640689] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:16:24,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459953898] [2023-08-27 02:16:24,132 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 02:16:24,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:16:24,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:16:24,133 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 02:16:24,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-27 02:16:24,238 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-27 02:16:24,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 02:16:24,239 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 02:16:24,240 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:16:24,277 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 02:16:24,278 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:16:24,318 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 02:16:24,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459953898] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:16:24,318 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:16:24,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2023-08-27 02:16:24,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197490750] [2023-08-27 02:16:24,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:16:24,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 02:16:24,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:16:24,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 02:16:24,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-27 02:16:24,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 432 [2023-08-27 02:16:24,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 36 transitions, 204 flow. Second operand has 8 states, 8 states have (on average 165.0) internal successors, (1320), 8 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:16:24,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:16:24,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 432 [2023-08-27 02:16:24,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:16:24,444 INFO L124 PetriNetUnfolderBase]: 109/201 cut-off events. [2023-08-27 02:16:24,444 INFO L125 PetriNetUnfolderBase]: For 444/444 co-relation queries the response was YES. [2023-08-27 02:16:24,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 788 conditions, 201 events. 109/201 cut-off events. For 444/444 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 622 event pairs, 31 based on Foata normal form. 4/205 useless extension candidates. Maximal degree in co-relation 770. Up to 140 conditions per place. [2023-08-27 02:16:24,446 INFO L140 encePairwiseOnDemand]: 427/432 looper letters, 37 selfloop transitions, 12 changer transitions 6/55 dead transitions. [2023-08-27 02:16:24,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 55 transitions, 420 flow [2023-08-27 02:16:24,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 02:16:24,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 02:16:24,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 848 transitions. [2023-08-27 02:16:24,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3925925925925926 [2023-08-27 02:16:24,449 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 848 transitions. [2023-08-27 02:16:24,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 848 transitions. [2023-08-27 02:16:24,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:16:24,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 848 transitions. [2023-08-27 02:16:24,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 169.6) internal successors, (848), 5 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:16:24,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 432.0) internal successors, (2592), 6 states have internal predecessors, (2592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:16:24,455 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 432.0) internal successors, (2592), 6 states have internal predecessors, (2592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:16:24,455 INFO L175 Difference]: Start difference. First operand has 43 places, 36 transitions, 204 flow. Second operand 5 states and 848 transitions. [2023-08-27 02:16:24,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 55 transitions, 420 flow [2023-08-27 02:16:24,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 55 transitions, 404 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-08-27 02:16:24,458 INFO L231 Difference]: Finished difference. Result has 47 places, 41 transitions, 281 flow [2023-08-27 02:16:24,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=432, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=281, PETRI_PLACES=47, PETRI_TRANSITIONS=41} [2023-08-27 02:16:24,459 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 24 predicate places. [2023-08-27 02:16:24,459 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 41 transitions, 281 flow [2023-08-27 02:16:24,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 165.0) internal successors, (1320), 8 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:16:24,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:16:24,460 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:16:24,472 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-27 02:16:24,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:16:24,666 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 2 more)] === [2023-08-27 02:16:24,666 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:16:24,666 INFO L85 PathProgramCache]: Analyzing trace with hash -24114542, now seen corresponding path program 1 times [2023-08-27 02:16:24,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:16:24,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710723752] [2023-08-27 02:16:24,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:16:24,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:16:24,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:16:26,946 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (* 5 c_~n~0)) (.cse0 (div c_~n~0 4294967296))) (and (<= (+ |c_thread1Thread1of1ForFork1_~i~0#1| (* 21474836480 .cse0)) (+ .cse1 1)) (< c_~n~0 (+ (* 4294967296 .cse0) 858993459)) (<= (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) (* (div .cse1 4294967296) 17179869185) 1) (+ (* c_~n~0 20) (* 17179869185 (div |c_thread1Thread1of1ForFork1_~i~0#1| 4294967296)) (* 5 .cse0))))) is different from false [2023-08-27 02:16:26,948 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 1 not checked. [2023-08-27 02:16:26,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:16:26,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710723752] [2023-08-27 02:16:26,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710723752] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:16:26,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667419578] [2023-08-27 02:16:26,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:16:26,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:16:26,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:16:26,950 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 02:16:26,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-27 02:16:27,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:16:27,067 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 39 conjunts are in the unsatisfiable core [2023-08-27 02:16:27,070 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:16:27,120 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 02:16:27,161 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-27 02:16:27,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 02:16:27,216 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 02:16:27,380 INFO L322 Elim1Store]: treesize reduction 37, result has 71.3 percent of original size [2023-08-27 02:16:27,381 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 10 new quantified variables, introduced 15 case distinctions, treesize of input 95 treesize of output 124 [2023-08-27 02:16:27,927 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:16:27,927 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:16:30,031 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_317 (Array Int Int)) (~x2~0 Int)) (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_317) c_~f~0.base))) (let ((.cse0 (select .cse1 (+ c_~f~0.offset (* 4 (select .cse1 (+ c_~f~0.offset (* 4 (select .cse1 (+ (* (select .cse1 (+ c_~f~0.offset (* ~x2~0 4))) 4) c_~f~0.offset)))))))))) (or (<= c_~size~0 .cse0) (< .cse0 0) (= c_~x1~0 (select .cse1 (+ (* .cse0 4) c_~f~0.offset))))))) is different from false [2023-08-27 02:16:30,078 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_317 (Array Int Int)) (~x2~0 Int)) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_317) c_~f~0.base))) (let ((.cse1 (select .cse0 (+ c_~f~0.offset (* 4 (select .cse0 (+ c_~f~0.offset (* 4 (select .cse0 (+ (* (select .cse0 (+ c_~f~0.offset (* ~x2~0 4))) 4) c_~f~0.offset)))))))))) (or (= (select .cse0 (+ (* .cse1 4) c_~f~0.offset)) (select (select |c_#memory_int| c_~f~0.base) (+ (* c_~x1~0 4) c_~f~0.offset))) (<= c_~size~0 .cse1) (< .cse1 0))))) is different from false [2023-08-27 02:16:30,170 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:16:30,171 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 371 treesize of output 215 [2023-08-27 02:16:30,273 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:16:30,274 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 10 new quantified variables, introduced 15 case distinctions, treesize of input 700 treesize of output 708 [2023-08-27 02:16:30,375 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:16:30,376 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 370 treesize of output 342 [2023-08-27 02:16:30,545 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:16:30,546 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 10 new quantified variables, introduced 15 case distinctions, treesize of input 151 treesize of output 245 [2023-08-27 02:16:35,345 INFO L209 tifierPushTermWalker]: Run 10 iterations without descend maybe there is a nontermination bug. [2023-08-27 02:16:35,400 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-27 02:16:35,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [667419578] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:16:35,400 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:16:35,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 16 [2023-08-27 02:16:35,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189816325] [2023-08-27 02:16:35,400 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:16:35,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-27 02:16:35,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:16:35,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-27 02:16:35,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=127, Unknown=3, NotChecked=72, Total=240 [2023-08-27 02:16:35,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 432 [2023-08-27 02:16:35,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 41 transitions, 281 flow. Second operand has 16 states, 16 states have (on average 121.6875) internal successors, (1947), 16 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:16:35,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:16:35,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 432 [2023-08-27 02:16:35,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:16:36,683 INFO L124 PetriNetUnfolderBase]: 236/420 cut-off events. [2023-08-27 02:16:36,683 INFO L125 PetriNetUnfolderBase]: For 977/1001 co-relation queries the response was YES. [2023-08-27 02:16:36,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1772 conditions, 420 events. 236/420 cut-off events. For 977/1001 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1618 event pairs, 8 based on Foata normal form. 43/458 useless extension candidates. Maximal degree in co-relation 1753. Up to 202 conditions per place. [2023-08-27 02:16:36,686 INFO L140 encePairwiseOnDemand]: 422/432 looper letters, 31 selfloop transitions, 24 changer transitions 68/126 dead transitions. [2023-08-27 02:16:36,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 126 transitions, 995 flow [2023-08-27 02:16:36,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-27 02:16:36,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-27 02:16:36,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2359 transitions. [2023-08-27 02:16:36,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28740253411306044 [2023-08-27 02:16:36,694 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2359 transitions. [2023-08-27 02:16:36,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2359 transitions. [2023-08-27 02:16:36,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:16:36,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2359 transitions. [2023-08-27 02:16:36,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 124.15789473684211) internal successors, (2359), 19 states have internal predecessors, (2359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:16:36,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 432.0) internal successors, (8640), 20 states have internal predecessors, (8640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:16:36,711 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 432.0) internal successors, (8640), 20 states have internal predecessors, (8640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:16:36,712 INFO L175 Difference]: Start difference. First operand has 47 places, 41 transitions, 281 flow. Second operand 19 states and 2359 transitions. [2023-08-27 02:16:36,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 126 transitions, 995 flow [2023-08-27 02:16:36,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 126 transitions, 963 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-08-27 02:16:36,716 INFO L231 Difference]: Finished difference. Result has 69 places, 47 transitions, 422 flow [2023-08-27 02:16:36,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=432, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=422, PETRI_PLACES=69, PETRI_TRANSITIONS=47} [2023-08-27 02:16:36,716 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 46 predicate places. [2023-08-27 02:16:36,717 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 47 transitions, 422 flow [2023-08-27 02:16:36,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 121.6875) internal successors, (1947), 16 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:16:36,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:16:36,718 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:16:36,725 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-27 02:16:36,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-27 02:16:36,925 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 2 more)] === [2023-08-27 02:16:36,926 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:16:36,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1658336628, now seen corresponding path program 2 times [2023-08-27 02:16:36,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:16:36,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427270241] [2023-08-27 02:16:36,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:16:36,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:16:36,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:16:37,123 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 02:16:37,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:16:37,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427270241] [2023-08-27 02:16:37,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427270241] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:16:37,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171197888] [2023-08-27 02:16:37,124 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 02:16:37,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:16:37,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:16:37,125 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 02:16:37,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-27 02:16:37,229 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 02:16:37,230 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 02:16:37,231 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 46 conjunts are in the unsatisfiable core [2023-08-27 02:16:37,234 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:16:37,305 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 02:16:37,350 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-27 02:16:37,382 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-27 02:16:37,516 INFO L322 Elim1Store]: treesize reduction 63, result has 22.2 percent of original size [2023-08-27 02:16:37,517 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 167 treesize of output 68 [2023-08-27 02:16:37,559 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:16:37,559 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:16:38,084 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:16:38,084 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 704 treesize of output 404 [2023-08-27 02:16:38,190 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:16:38,191 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 10 new quantified variables, introduced 15 case distinctions, treesize of input 2190 treesize of output 1958 [2023-08-27 02:16:38,450 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:16:38,451 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 10 new quantified variables, introduced 15 case distinctions, treesize of input 346 treesize of output 374 [2023-08-27 02:16:51,147 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:16:51,148 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 10 new quantified variables, introduced 15 case distinctions, treesize of input 493 treesize of output 365 [2023-08-27 02:16:53,344 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:16:53,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171197888] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:16:53,344 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:16:53,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 19 [2023-08-27 02:16:53,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349937580] [2023-08-27 02:16:53,345 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:16:53,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-27 02:16:53,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:16:53,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-27 02:16:53,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=271, Unknown=2, NotChecked=0, Total=342 [2023-08-27 02:16:53,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 432 [2023-08-27 02:16:53,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 47 transitions, 422 flow. Second operand has 19 states, 19 states have (on average 121.63157894736842) internal successors, (2311), 19 states have internal predecessors, (2311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:16:53,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:16:53,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 432 [2023-08-27 02:16:53,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:17:04,390 WARN L234 SmtUtils]: Spent 10.32s on a formula simplification. DAG size of input: 114 DAG size of output: 102 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-27 02:17:05,683 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-27 02:17:05,978 INFO L124 PetriNetUnfolderBase]: 244/437 cut-off events. [2023-08-27 02:17:05,978 INFO L125 PetriNetUnfolderBase]: For 2410/2456 co-relation queries the response was YES. [2023-08-27 02:17:05,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2695 conditions, 437 events. 244/437 cut-off events. For 2410/2456 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1693 event pairs, 2 based on Foata normal form. 39/472 useless extension candidates. Maximal degree in co-relation 2668. Up to 277 conditions per place. [2023-08-27 02:17:05,983 INFO L140 encePairwiseOnDemand]: 423/432 looper letters, 70 selfloop transitions, 56 changer transitions 1/130 dead transitions. [2023-08-27 02:17:05,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 130 transitions, 1407 flow [2023-08-27 02:17:05,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-27 02:17:05,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-27 02:17:05,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2356 transitions. [2023-08-27 02:17:05,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28703703703703703 [2023-08-27 02:17:05,991 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2356 transitions. [2023-08-27 02:17:05,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2356 transitions. [2023-08-27 02:17:05,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:17:05,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2356 transitions. [2023-08-27 02:17:05,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:17:06,007 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 432.0) internal successors, (8640), 20 states have internal predecessors, (8640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:17:06,009 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 432.0) internal successors, (8640), 20 states have internal predecessors, (8640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:17:06,009 INFO L175 Difference]: Start difference. First operand has 69 places, 47 transitions, 422 flow. Second operand 19 states and 2356 transitions. [2023-08-27 02:17:06,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 130 transitions, 1407 flow [2023-08-27 02:17:06,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 130 transitions, 1069 flow, removed 133 selfloop flow, removed 15 redundant places. [2023-08-27 02:17:06,019 INFO L231 Difference]: Finished difference. Result has 69 places, 84 transitions, 838 flow [2023-08-27 02:17:06,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=432, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=838, PETRI_PLACES=69, PETRI_TRANSITIONS=84} [2023-08-27 02:17:06,020 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 46 predicate places. [2023-08-27 02:17:06,020 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 84 transitions, 838 flow [2023-08-27 02:17:06,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 121.63157894736842) internal successors, (2311), 19 states have internal predecessors, (2311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:17:06,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:17:06,021 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:17:06,029 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-27 02:17:06,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-27 02:17:06,230 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 2 more)] === [2023-08-27 02:17:06,230 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:17:06,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1250722725, now seen corresponding path program 3 times [2023-08-27 02:17:06,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:17:06,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629835832] [2023-08-27 02:17:06,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:17:06,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:17:06,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:17:07,230 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 02:17:07,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:17:07,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629835832] [2023-08-27 02:17:07,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629835832] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:17:07,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562323332] [2023-08-27 02:17:07,231 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 02:17:07,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:17:07,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:17:07,233 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 02:17:07,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-27 02:17:07,425 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-27 02:17:07,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 02:17:07,426 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-27 02:17:07,427 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:17:08,214 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 02:17:08,214 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:17:08,412 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 02:17:08,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562323332] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:17:08,413 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:17:08,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-27 02:17:08,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648751282] [2023-08-27 02:17:08,413 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:17:08,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-27 02:17:08,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:17:08,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-27 02:17:08,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-08-27 02:17:08,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 432 [2023-08-27 02:17:08,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 84 transitions, 838 flow. Second operand has 12 states, 12 states have (on average 175.41666666666666) internal successors, (2105), 12 states have internal predecessors, (2105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:17:08,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:17:08,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 432 [2023-08-27 02:17:08,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:17:11,758 INFO L124 PetriNetUnfolderBase]: 253/444 cut-off events. [2023-08-27 02:17:11,759 INFO L125 PetriNetUnfolderBase]: For 2362/2384 co-relation queries the response was YES. [2023-08-27 02:17:11,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2623 conditions, 444 events. 253/444 cut-off events. For 2362/2384 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1658 event pairs, 9 based on Foata normal form. 74/510 useless extension candidates. Maximal degree in co-relation 2599. Up to 302 conditions per place. [2023-08-27 02:17:11,763 INFO L140 encePairwiseOnDemand]: 427/432 looper letters, 91 selfloop transitions, 43 changer transitions 0/137 dead transitions. [2023-08-27 02:17:11,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 137 transitions, 1578 flow [2023-08-27 02:17:11,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 02:17:11,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 02:17:11,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1788 transitions. [2023-08-27 02:17:11,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41388888888888886 [2023-08-27 02:17:11,769 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1788 transitions. [2023-08-27 02:17:11,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1788 transitions. [2023-08-27 02:17:11,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:17:11,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1788 transitions. [2023-08-27 02:17:11,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 178.8) internal successors, (1788), 10 states have internal predecessors, (1788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:17:11,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 432.0) internal successors, (4752), 11 states have internal predecessors, (4752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:17:11,779 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 432.0) internal successors, (4752), 11 states have internal predecessors, (4752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:17:11,779 INFO L175 Difference]: Start difference. First operand has 69 places, 84 transitions, 838 flow. Second operand 10 states and 1788 transitions. [2023-08-27 02:17:11,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 137 transitions, 1578 flow [2023-08-27 02:17:11,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 137 transitions, 1422 flow, removed 52 selfloop flow, removed 9 redundant places. [2023-08-27 02:17:11,788 INFO L231 Difference]: Finished difference. Result has 69 places, 92 transitions, 871 flow [2023-08-27 02:17:11,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=432, PETRI_DIFFERENCE_MINUEND_FLOW=700, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=871, PETRI_PLACES=69, PETRI_TRANSITIONS=92} [2023-08-27 02:17:11,789 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 46 predicate places. [2023-08-27 02:17:11,789 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 92 transitions, 871 flow [2023-08-27 02:17:11,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 175.41666666666666) internal successors, (2105), 12 states have internal predecessors, (2105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:17:11,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:17:11,790 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:17:11,796 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-27 02:17:11,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-27 02:17:11,996 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 2 more)] === [2023-08-27 02:17:11,996 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:17:11,996 INFO L85 PathProgramCache]: Analyzing trace with hash -884384832, now seen corresponding path program 4 times [2023-08-27 02:17:11,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:17:11,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541364972] [2023-08-27 02:17:11,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:17:11,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:17:12,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:17:16,351 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:17:16,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:17:16,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541364972] [2023-08-27 02:17:16,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541364972] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:17:16,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348377174] [2023-08-27 02:17:16,352 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 02:17:16,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:17:16,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:17:16,357 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 02:17:16,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-27 02:17:16,450 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 02:17:16,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 02:17:16,451 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 31 conjunts are in the unsatisfiable core [2023-08-27 02:17:16,453 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:17:16,701 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:17:16,701 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 63 treesize of output 107 [2023-08-27 02:17:16,811 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 02:17:16,812 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:17:17,745 INFO L322 Elim1Store]: treesize reduction 25, result has 94.1 percent of original size [2023-08-27 02:17:17,746 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 18 new quantified variables, introduced 45 case distinctions, treesize of input 83 treesize of output 467 [2023-08-27 02:17:20,014 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 02:17:20,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348377174] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:17:20,015 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:17:20,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 6] total 24 [2023-08-27 02:17:20,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731250635] [2023-08-27 02:17:20,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:17:20,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-27 02:17:20,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:17:20,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-27 02:17:20,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=576, Unknown=0, NotChecked=0, Total=650 [2023-08-27 02:17:20,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 432 [2023-08-27 02:17:20,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 92 transitions, 871 flow. Second operand has 26 states, 26 states have (on average 130.73076923076923) internal successors, (3399), 26 states have internal predecessors, (3399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:17:20,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:17:20,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 432 [2023-08-27 02:17:20,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:17:22,409 INFO L124 PetriNetUnfolderBase]: 761/1337 cut-off events. [2023-08-27 02:17:22,410 INFO L125 PetriNetUnfolderBase]: For 6146/6220 co-relation queries the response was YES. [2023-08-27 02:17:22,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7910 conditions, 1337 events. 761/1337 cut-off events. For 6146/6220 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 6522 event pairs, 35 based on Foata normal form. 50/1369 useless extension candidates. Maximal degree in co-relation 7887. Up to 1060 conditions per place. [2023-08-27 02:17:22,422 INFO L140 encePairwiseOnDemand]: 425/432 looper letters, 155 selfloop transitions, 160 changer transitions 2/323 dead transitions. [2023-08-27 02:17:22,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 323 transitions, 3495 flow [2023-08-27 02:17:22,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-08-27 02:17:22,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-08-27 02:17:22,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 4196 transitions. [2023-08-27 02:17:22,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31332138590203107 [2023-08-27 02:17:22,431 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 4196 transitions. [2023-08-27 02:17:22,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 4196 transitions. [2023-08-27 02:17:22,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:17:22,433 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 4196 transitions. [2023-08-27 02:17:22,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 135.3548387096774) internal successors, (4196), 31 states have internal predecessors, (4196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:17:22,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 432.0) internal successors, (13824), 32 states have internal predecessors, (13824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:17:22,454 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 432.0) internal successors, (13824), 32 states have internal predecessors, (13824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:17:22,455 INFO L175 Difference]: Start difference. First operand has 69 places, 92 transitions, 871 flow. Second operand 31 states and 4196 transitions. [2023-08-27 02:17:22,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 323 transitions, 3495 flow [2023-08-27 02:17:22,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 323 transitions, 3142 flow, removed 121 selfloop flow, removed 6 redundant places. [2023-08-27 02:17:22,476 INFO L231 Difference]: Finished difference. Result has 99 places, 207 transitions, 2479 flow [2023-08-27 02:17:22,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=432, PETRI_DIFFERENCE_MINUEND_FLOW=780, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=2479, PETRI_PLACES=99, PETRI_TRANSITIONS=207} [2023-08-27 02:17:22,477 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 76 predicate places. [2023-08-27 02:17:22,477 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 207 transitions, 2479 flow [2023-08-27 02:17:22,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 130.73076923076923) internal successors, (3399), 26 states have internal predecessors, (3399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:17:22,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:17:22,478 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:17:22,487 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-27 02:17:22,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-27 02:17:22,684 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 2 more)] === [2023-08-27 02:17:22,684 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:17:22,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1101200904, now seen corresponding path program 5 times [2023-08-27 02:17:22,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:17:22,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590213320] [2023-08-27 02:17:22,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:17:22,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:17:22,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:17:25,304 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 02:17:25,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:17:25,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590213320] [2023-08-27 02:17:25,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590213320] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:17:25,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009371750] [2023-08-27 02:17:25,305 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 02:17:25,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:17:25,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:17:25,306 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 02:17:25,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-27 02:17:25,489 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-08-27 02:17:25,490 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 02:17:25,491 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 31 conjunts are in the unsatisfiable core [2023-08-27 02:17:25,492 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:17:25,730 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-27 02:17:25,912 INFO L322 Elim1Store]: treesize reduction 272, result has 26.9 percent of original size [2023-08-27 02:17:25,913 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 18 new quantified variables, introduced 45 case distinctions, treesize of input 65 treesize of output 146 [2023-08-27 02:17:26,052 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 02:17:26,052 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:17:27,034 INFO L322 Elim1Store]: treesize reduction 25, result has 94.1 percent of original size [2023-08-27 02:17:27,035 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 18 new quantified variables, introduced 45 case distinctions, treesize of input 83 treesize of output 467 [2023-08-27 02:17:29,495 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 02:17:29,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009371750] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:17:29,495 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:17:29,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 7] total 24 [2023-08-27 02:17:29,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368779551] [2023-08-27 02:17:29,496 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:17:29,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-27 02:17:29,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:17:29,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-27 02:17:29,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=567, Unknown=0, NotChecked=0, Total=650 [2023-08-27 02:17:29,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 432 [2023-08-27 02:17:29,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 207 transitions, 2479 flow. Second operand has 26 states, 26 states have (on average 138.03846153846155) internal successors, (3589), 26 states have internal predecessors, (3589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:17:29,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:17:29,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 432 [2023-08-27 02:17:29,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:17:31,838 INFO L124 PetriNetUnfolderBase]: 1297/2301 cut-off events. [2023-08-27 02:17:31,838 INFO L125 PetriNetUnfolderBase]: For 10630/10708 co-relation queries the response was YES. [2023-08-27 02:17:31,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13731 conditions, 2301 events. 1297/2301 cut-off events. For 10630/10708 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 12709 event pairs, 98 based on Foata normal form. 55/2345 useless extension candidates. Maximal degree in co-relation 13703. Up to 1872 conditions per place. [2023-08-27 02:17:31,853 INFO L140 encePairwiseOnDemand]: 425/432 looper letters, 172 selfloop transitions, 218 changer transitions 2/398 dead transitions. [2023-08-27 02:17:31,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 398 transitions, 4894 flow [2023-08-27 02:17:31,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-08-27 02:17:31,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-08-27 02:17:31,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4136 transitions. [2023-08-27 02:17:31,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3301404853128991 [2023-08-27 02:17:31,859 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4136 transitions. [2023-08-27 02:17:31,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4136 transitions. [2023-08-27 02:17:31,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:17:31,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4136 transitions. [2023-08-27 02:17:31,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 142.6206896551724) internal successors, (4136), 29 states have internal predecessors, (4136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:17:31,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 432.0) internal successors, (12960), 30 states have internal predecessors, (12960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:17:31,875 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 432.0) internal successors, (12960), 30 states have internal predecessors, (12960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:17:31,875 INFO L175 Difference]: Start difference. First operand has 99 places, 207 transitions, 2479 flow. Second operand 29 states and 4136 transitions. [2023-08-27 02:17:31,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 398 transitions, 4894 flow [2023-08-27 02:17:31,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 398 transitions, 4107 flow, removed 374 selfloop flow, removed 6 redundant places. [2023-08-27 02:17:31,926 INFO L231 Difference]: Finished difference. Result has 127 places, 285 transitions, 3490 flow [2023-08-27 02:17:31,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=432, PETRI_DIFFERENCE_MINUEND_FLOW=1910, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=3490, PETRI_PLACES=127, PETRI_TRANSITIONS=285} [2023-08-27 02:17:31,926 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 104 predicate places. [2023-08-27 02:17:31,927 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 285 transitions, 3490 flow [2023-08-27 02:17:31,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 138.03846153846155) internal successors, (3589), 26 states have internal predecessors, (3589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:17:31,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:17:31,928 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:17:31,939 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-27 02:17:32,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-27 02:17:32,134 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 2 more)] === [2023-08-27 02:17:32,134 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:17:32,134 INFO L85 PathProgramCache]: Analyzing trace with hash 560504342, now seen corresponding path program 6 times [2023-08-27 02:17:32,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:17:32,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160338697] [2023-08-27 02:17:32,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:17:32,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:17:32,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:17:35,882 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:17:35,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:17:35,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160338697] [2023-08-27 02:17:35,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160338697] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:17:35,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110680614] [2023-08-27 02:17:35,883 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 02:17:35,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:17:35,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:17:35,885 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 02:17:35,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-27 02:17:36,014 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-08-27 02:17:36,015 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 02:17:36,016 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 71 conjunts are in the unsatisfiable core [2023-08-27 02:17:36,022 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:17:36,068 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 02:17:36,113 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 02:17:36,167 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-27 02:17:36,212 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-27 02:17:36,605 INFO L322 Elim1Store]: treesize reduction 63, result has 22.2 percent of original size [2023-08-27 02:17:36,605 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 153 treesize of output 62 [2023-08-27 02:17:36,654 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:17:36,654 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:17:38,345 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:17:38,345 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 1468 treesize of output 653 [2023-08-27 02:17:39,257 INFO L322 Elim1Store]: treesize reduction 5, result has 98.8 percent of original size [2023-08-27 02:17:39,257 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 18 new quantified variables, introduced 45 case distinctions, treesize of input 1626 treesize of output 1773 [2023-08-27 02:17:40,765 INFO L322 Elim1Store]: treesize reduction 8, result has 98.1 percent of original size [2023-08-27 02:17:40,765 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 18 new quantified variables, introduced 45 case distinctions, treesize of input 1290 treesize of output 1266 [2023-08-27 02:17:43,066 INFO L322 Elim1Store]: treesize reduction 8, result has 98.1 percent of original size [2023-08-27 02:17:43,066 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 18 new quantified variables, introduced 45 case distinctions, treesize of input 513 treesize of output 741 [2023-08-27 02:18:07,425 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-27 02:18:10,435 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-27 02:18:13,277 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 02:18:14,487 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 02:19:42,647 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-27 02:19:45,518 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 02:19:48,241 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 02:19:50,671 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-27 02:19:52,849 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 02:19:54,951 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-27 02:19:57,317 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 02:19:58,940 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-27 02:20:01,288 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 02:20:34,557 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 02:20:58,795 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 02:20:59,508 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 02:21:01,245 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 02:21:02,127 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 02:21:04,132 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 02:21:04,787 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 02:21:08,337 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 02:21:09,139 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 02:21:10,966 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 02:21:11,604 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 02:21:13,137 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 02:21:13,835 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 02:21:39,358 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 02:22:06,062 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 02:22:06,754 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 02:22:24,452 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:22:24,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110680614] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:22:24,452 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:22:24,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 32 [2023-08-27 02:22:24,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961029522] [2023-08-27 02:22:24,453 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:22:24,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-08-27 02:22:24,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:22:24,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-08-27 02:22:24,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=967, Unknown=4, NotChecked=0, Total=1122 [2023-08-27 02:22:24,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 432 [2023-08-27 02:22:24,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 285 transitions, 3490 flow. Second operand has 34 states, 34 states have (on average 130.61764705882354) internal successors, (4441), 34 states have internal predecessors, (4441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:22:24,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:22:24,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 432 [2023-08-27 02:22:24,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:22:31,026 INFO L124 PetriNetUnfolderBase]: 2793/5005 cut-off events. [2023-08-27 02:22:31,027 INFO L125 PetriNetUnfolderBase]: For 20506/20597 co-relation queries the response was YES. [2023-08-27 02:22:31,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28637 conditions, 5005 events. 2793/5005 cut-off events. For 20506/20597 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 33690 event pairs, 305 based on Foata normal form. 73/5066 useless extension candidates. Maximal degree in co-relation 28603. Up to 4136 conditions per place. [2023-08-27 02:22:31,068 INFO L140 encePairwiseOnDemand]: 425/432 looper letters, 307 selfloop transitions, 325 changer transitions 5/643 dead transitions. [2023-08-27 02:22:31,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 643 transitions, 8574 flow [2023-08-27 02:22:31,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-08-27 02:22:31,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-08-27 02:22:31,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4095 transitions. [2023-08-27 02:22:31,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3159722222222222 [2023-08-27 02:22:31,073 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4095 transitions. [2023-08-27 02:22:31,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4095 transitions. [2023-08-27 02:22:31,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:22:31,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4095 transitions. [2023-08-27 02:22:31,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 136.5) internal successors, (4095), 30 states have internal predecessors, (4095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:22:31,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 432.0) internal successors, (13392), 31 states have internal predecessors, (13392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:22:31,087 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 432.0) internal successors, (13392), 31 states have internal predecessors, (13392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:22:31,087 INFO L175 Difference]: Start difference. First operand has 127 places, 285 transitions, 3490 flow. Second operand 30 states and 4095 transitions. [2023-08-27 02:22:31,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 643 transitions, 8574 flow [2023-08-27 02:22:31,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 643 transitions, 7821 flow, removed 299 selfloop flow, removed 15 redundant places. [2023-08-27 02:22:31,195 INFO L231 Difference]: Finished difference. Result has 155 places, 497 transitions, 7148 flow [2023-08-27 02:22:31,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=432, PETRI_DIFFERENCE_MINUEND_FLOW=3129, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=7148, PETRI_PLACES=155, PETRI_TRANSITIONS=497} [2023-08-27 02:22:31,196 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 132 predicate places. [2023-08-27 02:22:31,196 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 497 transitions, 7148 flow [2023-08-27 02:22:31,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 130.61764705882354) internal successors, (4441), 34 states have internal predecessors, (4441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:22:31,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:22:31,197 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:22:31,208 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-27 02:22:31,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-27 02:22:31,403 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 2 more)] === [2023-08-27 02:22:31,404 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:22:31,404 INFO L85 PathProgramCache]: Analyzing trace with hash -2040170086, now seen corresponding path program 7 times [2023-08-27 02:22:31,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:22:31,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746567557] [2023-08-27 02:22:31,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:22:31,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:22:31,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:22:32,996 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:22:32,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:22:32,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746567557] [2023-08-27 02:22:32,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746567557] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:22:32,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842154052] [2023-08-27 02:22:32,997 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-27 02:22:32,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:22:32,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:22:33,001 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 02:22:33,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-27 02:22:33,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:22:33,114 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 31 conjunts are in the unsatisfiable core [2023-08-27 02:22:33,115 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:22:33,426 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:22:33,426 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 63 treesize of output 107 [2023-08-27 02:22:33,537 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 02:22:33,537 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:22:34,702 INFO L322 Elim1Store]: treesize reduction 25, result has 94.1 percent of original size [2023-08-27 02:22:34,702 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 18 new quantified variables, introduced 45 case distinctions, treesize of input 83 treesize of output 467 [2023-08-27 02:22:37,370 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 02:22:37,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842154052] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:22:37,370 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:22:37,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 6] total 24 [2023-08-27 02:22:37,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304997737] [2023-08-27 02:22:37,371 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:22:37,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-27 02:22:37,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:22:37,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-27 02:22:37,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=565, Unknown=0, NotChecked=0, Total=650 [2023-08-27 02:22:37,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 432 [2023-08-27 02:22:37,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 497 transitions, 7148 flow. Second operand has 26 states, 26 states have (on average 137.8846153846154) internal successors, (3585), 26 states have internal predecessors, (3585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:22:37,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:22:37,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 432 [2023-08-27 02:22:37,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:22:39,825 INFO L124 PetriNetUnfolderBase]: 4426/7945 cut-off events. [2023-08-27 02:22:39,826 INFO L125 PetriNetUnfolderBase]: For 36463/36575 co-relation queries the response was YES. [2023-08-27 02:22:39,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47721 conditions, 7945 events. 4426/7945 cut-off events. For 36463/36575 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 58086 event pairs, 791 based on Foata normal form. 91/8024 useless extension candidates. Maximal degree in co-relation 47672. Up to 6624 conditions per place. [2023-08-27 02:22:39,906 INFO L140 encePairwiseOnDemand]: 426/432 looper letters, 539 selfloop transitions, 323 changer transitions 3/871 dead transitions. [2023-08-27 02:22:39,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 871 transitions, 13422 flow [2023-08-27 02:22:39,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-08-27 02:22:39,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-08-27 02:22:39,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 4403 transitions. [2023-08-27 02:22:39,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3287783751493429 [2023-08-27 02:22:39,912 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 4403 transitions. [2023-08-27 02:22:39,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 4403 transitions. [2023-08-27 02:22:39,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:22:39,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 4403 transitions. [2023-08-27 02:22:39,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 142.03225806451613) internal successors, (4403), 31 states have internal predecessors, (4403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:22:39,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 432.0) internal successors, (13824), 32 states have internal predecessors, (13824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:22:39,928 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 432.0) internal successors, (13824), 32 states have internal predecessors, (13824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:22:39,928 INFO L175 Difference]: Start difference. First operand has 155 places, 497 transitions, 7148 flow. Second operand 31 states and 4403 transitions. [2023-08-27 02:22:39,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 871 transitions, 13422 flow [2023-08-27 02:22:40,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 871 transitions, 12917 flow, removed 219 selfloop flow, removed 10 redundant places. [2023-08-27 02:22:40,196 INFO L231 Difference]: Finished difference. Result has 186 places, 749 transitions, 11949 flow [2023-08-27 02:22:40,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=432, PETRI_DIFFERENCE_MINUEND_FLOW=6803, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=11949, PETRI_PLACES=186, PETRI_TRANSITIONS=749} [2023-08-27 02:22:40,196 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 163 predicate places. [2023-08-27 02:22:40,196 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 749 transitions, 11949 flow [2023-08-27 02:22:40,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 137.8846153846154) internal successors, (3585), 26 states have internal predecessors, (3585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:22:40,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:22:40,197 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:22:40,202 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-27 02:22:40,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:22:40,398 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 2 more)] === [2023-08-27 02:22:40,398 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:22:40,398 INFO L85 PathProgramCache]: Analyzing trace with hash -850419684, now seen corresponding path program 8 times [2023-08-27 02:22:40,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:22:40,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373120141] [2023-08-27 02:22:40,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:22:40,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:22:40,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:22:42,755 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:22:42,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:22:42,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373120141] [2023-08-27 02:22:42,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373120141] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:22:42,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500555219] [2023-08-27 02:22:42,755 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 02:22:42,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:22:42,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:22:42,757 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 02:22:42,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-27 02:22:42,899 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 02:22:42,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 02:22:42,901 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 38 conjunts are in the unsatisfiable core [2023-08-27 02:22:42,903 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:22:43,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 02:22:43,186 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 32 [2023-08-27 02:22:43,261 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:22:43,261 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 63 treesize of output 107 [2023-08-27 02:22:43,324 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 02:22:43,324 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:22:43,366 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_566 (Array Int Int))) (= (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_566) c_~f~0.base))) (select .cse0 (+ (* (select .cse0 (+ (* (select .cse0 (+ (* 4 (select .cse0 (+ c_~f~0.offset (* (select .cse0 (+ (* c_~x2~0 4) c_~f~0.offset)) 4)))) c_~f~0.offset)) 4) c_~f~0.offset)) 4) c_~f~0.offset))) c_~x1~0)) is different from false [2023-08-27 02:22:43,423 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_566 (Array Int Int))) (= (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_566) c_~f~0.base))) (select .cse0 (+ (* (select .cse0 (+ (* (select .cse0 (+ (* 4 (select .cse0 (+ c_~f~0.offset (* (select .cse0 (+ (* c_~x2~0 4) c_~f~0.offset)) 4)))) c_~f~0.offset)) 4) c_~f~0.offset)) 4) c_~f~0.offset))) (let ((.cse1 (select |c_#memory_int| c_~f~0.base))) (select .cse1 (+ c_~f~0.offset (* (select .cse1 (+ (* c_~x1~0 4) c_~f~0.offset)) 4)))))) is different from false [2023-08-27 02:22:43,429 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_566 (Array Int Int))) (= (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_566) c_~f~0.base))) (select .cse0 (+ (* (select .cse0 (+ (* (select .cse0 (+ (* 4 (select .cse0 (+ c_~f~0.offset (* (select .cse0 (+ (* c_~x2~0 4) c_~f~0.offset)) 4)))) c_~f~0.offset)) 4) c_~f~0.offset)) 4) c_~f~0.offset))) (let ((.cse1 (select |c_#memory_int| c_~f~0.base))) (select .cse1 (+ c_~f~0.offset (* (select .cse1 (+ c_~f~0.offset (* (select .cse1 (+ (* c_~x1~0 4) c_~f~0.offset)) 4))) 4)))))) is different from false [2023-08-27 02:22:43,436 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_566 (Array Int Int))) (= (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_566) c_~f~0.base))) (select .cse0 (+ (* (select .cse0 (+ (* (select .cse0 (+ (* 4 (select .cse0 (+ c_~f~0.offset (* (select .cse0 (+ (* c_~x2~0 4) c_~f~0.offset)) 4)))) c_~f~0.offset)) 4) c_~f~0.offset)) 4) c_~f~0.offset))) (let ((.cse1 (select |c_#memory_int| c_~f~0.base))) (select .cse1 (+ c_~f~0.offset (* (select .cse1 (+ c_~f~0.offset (* (select .cse1 (+ c_~f~0.offset (* (select .cse1 (+ (* c_~x1~0 4) c_~f~0.offset)) 4))) 4))) 4)))))) is different from false [2023-08-27 02:22:43,849 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:22:43,850 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 18 new quantified variables, introduced 45 case distinctions, treesize of input 166 treesize of output 534 [2023-08-27 02:22:43,928 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:22:43,928 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 37 treesize of output 136 [2023-08-27 02:22:49,559 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 12 not checked. [2023-08-27 02:22:49,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500555219] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:22:49,559 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:22:49,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 9] total 28 [2023-08-27 02:22:49,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961730169] [2023-08-27 02:22:49,560 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:22:49,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-08-27 02:22:49,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:22:49,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-08-27 02:22:49,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=583, Unknown=7, NotChecked=204, Total=870 [2023-08-27 02:22:49,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 432 [2023-08-27 02:22:49,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 749 transitions, 11949 flow. Second operand has 30 states, 30 states have (on average 130.5) internal successors, (3915), 30 states have internal predecessors, (3915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:22:49,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:22:49,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 432 [2023-08-27 02:22:49,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:22:51,351 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (+ (* c_~x2~0 4) c_~f~0.offset))) (and (forall ((v_ArrVal_566 (Array Int Int))) (= (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_566) c_~f~0.base))) (select .cse0 (+ (* (select .cse0 (+ (* (select .cse0 (+ (* 4 (select .cse0 (+ c_~f~0.offset (* (select .cse0 .cse1) 4)))) c_~f~0.offset)) 4) c_~f~0.offset)) 4) c_~f~0.offset))) c_~x1~0)) (forall ((v_ArrVal_566 (Array Int Int))) (= (let ((.cse2 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_566) c_~f~0.base))) (select .cse2 (+ (* (select .cse2 (+ (* (select .cse2 (+ (* 4 (select .cse2 (+ c_~f~0.offset (* (select .cse2 .cse1) 4)))) c_~f~0.offset)) 4) c_~f~0.offset)) 4) c_~f~0.offset))) (let ((.cse3 (select |c_#memory_int| c_~f~0.base))) (select .cse3 (+ c_~f~0.offset (* (select .cse3 (+ c_~f~0.offset (* (select .cse3 (+ c_~f~0.offset (* (select .cse3 (+ (* c_~x1~0 4) c_~f~0.offset)) 4))) 4))) 4)))))))) is different from false [2023-08-27 02:22:55,285 INFO L124 PetriNetUnfolderBase]: 5223/9297 cut-off events. [2023-08-27 02:22:55,286 INFO L125 PetriNetUnfolderBase]: For 55657/55829 co-relation queries the response was YES. [2023-08-27 02:22:55,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59422 conditions, 9297 events. 5223/9297 cut-off events. For 55657/55829 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 67840 event pairs, 1230 based on Foata normal form. 93/9368 useless extension candidates. Maximal degree in co-relation 59361. Up to 7772 conditions per place. [2023-08-27 02:22:55,505 INFO L140 encePairwiseOnDemand]: 421/432 looper letters, 691 selfloop transitions, 312 changer transitions 3/1012 dead transitions. [2023-08-27 02:22:55,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 1012 transitions, 17352 flow [2023-08-27 02:22:55,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-08-27 02:22:55,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-08-27 02:22:55,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4048 transitions. [2023-08-27 02:22:55,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31234567901234567 [2023-08-27 02:22:55,513 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4048 transitions. [2023-08-27 02:22:55,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4048 transitions. [2023-08-27 02:22:55,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:22:55,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4048 transitions. [2023-08-27 02:22:55,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 134.93333333333334) internal successors, (4048), 30 states have internal predecessors, (4048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:22:55,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 432.0) internal successors, (13392), 31 states have internal predecessors, (13392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:22:55,529 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 432.0) internal successors, (13392), 31 states have internal predecessors, (13392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:22:55,529 INFO L175 Difference]: Start difference. First operand has 186 places, 749 transitions, 11949 flow. Second operand 30 states and 4048 transitions. [2023-08-27 02:22:55,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 1012 transitions, 17352 flow [2023-08-27 02:22:55,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 1012 transitions, 16692 flow, removed 316 selfloop flow, removed 6 redundant places. [2023-08-27 02:22:55,997 INFO L231 Difference]: Finished difference. Result has 219 places, 939 transitions, 15363 flow [2023-08-27 02:22:55,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=432, PETRI_DIFFERENCE_MINUEND_FLOW=11289, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=749, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=561, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=15363, PETRI_PLACES=219, PETRI_TRANSITIONS=939} [2023-08-27 02:22:55,998 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 196 predicate places. [2023-08-27 02:22:55,998 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 939 transitions, 15363 flow [2023-08-27 02:22:55,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 130.5) internal successors, (3915), 30 states have internal predecessors, (3915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:22:55,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:22:55,999 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:22:56,004 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-27 02:22:56,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:22:56,200 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 2 more)] === [2023-08-27 02:22:56,200 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:22:56,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1672032322, now seen corresponding path program 9 times [2023-08-27 02:22:56,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:22:56,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665603065] [2023-08-27 02:22:56,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:22:56,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:22:56,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:22:59,072 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:22:59,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:22:59,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665603065] [2023-08-27 02:22:59,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665603065] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:22:59,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102978824] [2023-08-27 02:22:59,073 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 02:22:59,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:22:59,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:22:59,074 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 02:22:59,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-27 02:22:59,262 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-08-27 02:22:59,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 02:22:59,265 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 77 conjunts are in the unsatisfiable core [2023-08-27 02:22:59,266 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:22:59,349 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 02:22:59,407 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-27 02:22:59,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 02:22:59,533 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2023-08-27 02:22:59,802 INFO L322 Elim1Store]: treesize reduction 63, result has 22.2 percent of original size [2023-08-27 02:22:59,803 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 153 treesize of output 62 [2023-08-27 02:22:59,857 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:22:59,858 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:23:01,246 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:23:01,247 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 1206 treesize of output 666 [2023-08-27 02:23:02,705 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:23:02,706 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 23 new quantified variables, introduced 78 case distinctions, treesize of input 2660 treesize of output 2848 [2023-08-27 02:23:04,482 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:23:04,483 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 19 new quantified variables, introduced 55 case distinctions, treesize of input 1266 treesize of output 1518 [2023-08-27 02:23:06,282 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:23:06,283 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 18 new quantified variables, introduced 45 case distinctions, treesize of input 991 treesize of output 939 Received shutdown request... [2023-08-27 02:29:50,344 WARN L266 SmtUtils]: Removed 2 from assertion stack [2023-08-27 02:29:50,345 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (4 of 5 remaining) [2023-08-27 02:29:50,346 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-27 02:29:50,346 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-27 02:29:50,352 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-27 02:29:50,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:29:50,546 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 23 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 22ms.. [2023-08-27 02:29:50,548 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 5 remaining) [2023-08-27 02:29:50,548 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 5 remaining) [2023-08-27 02:29:50,548 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-08-27 02:29:50,548 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-08-27 02:29:50,548 INFO L445 BasicCegarLoop]: Path program histogram: [9, 3, 3, 2, 1, 1, 1, 1] [2023-08-27 02:29:50,551 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 02:29:50,551 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 02:29:50,553 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 02:29:50 BasicIcfg [2023-08-27 02:29:50,553 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 02:29:50,553 INFO L158 Benchmark]: Toolchain (without parser) took 817821.16ms. Allocated memory was 385.9MB in the beginning and 1.7GB in the end (delta: 1.3GB). Free memory was 361.4MB in the beginning and 1.3GB in the end (delta: -900.7MB). Peak memory consumption was 1.2GB. Max. memory is 16.0GB. [2023-08-27 02:29:50,554 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 385.9MB. Free memory was 363.8MB in the beginning and 363.8MB in the end (delta: 86.2kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 02:29:50,554 INFO L158 Benchmark]: CACSL2BoogieTranslator took 262.54ms. Allocated memory is still 385.9MB. Free memory was 361.4MB in the beginning and 349.8MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-27 02:29:50,554 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.11ms. Allocated memory is still 385.9MB. Free memory was 349.8MB in the beginning and 347.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 02:29:50,554 INFO L158 Benchmark]: Boogie Preprocessor took 38.51ms. Allocated memory is still 385.9MB. Free memory was 347.7MB in the beginning and 346.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 02:29:50,554 INFO L158 Benchmark]: RCFGBuilder took 569.76ms. Allocated memory is still 385.9MB. Free memory was 346.1MB in the beginning and 327.9MB in the end (delta: 18.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-08-27 02:29:50,555 INFO L158 Benchmark]: TraceAbstraction took 816909.24ms. Allocated memory was 385.9MB in the beginning and 1.7GB in the end (delta: 1.3GB). Free memory was 327.2MB in the beginning and 1.3GB in the end (delta: -934.9MB). Peak memory consumption was 1.1GB. Max. memory is 16.0GB. [2023-08-27 02:29:50,567 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 385.9MB. Free memory was 363.8MB in the beginning and 363.8MB in the end (delta: 86.2kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 262.54ms. Allocated memory is still 385.9MB. Free memory was 361.4MB in the beginning and 349.8MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 34.11ms. Allocated memory is still 385.9MB. Free memory was 349.8MB in the beginning and 347.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 38.51ms. Allocated memory is still 385.9MB. Free memory was 347.7MB in the beginning and 346.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 569.76ms. Allocated memory is still 385.9MB. Free memory was 346.1MB in the beginning and 327.9MB in the end (delta: 18.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 816909.24ms. Allocated memory was 385.9MB in the beginning and 1.7GB in the end (delta: 1.3GB). Free memory was 327.2MB in the beginning and 1.3GB in the end (delta: -934.9MB). Peak memory consumption was 1.1GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.5s, 181 PlacesBefore, 23 PlacesAfterwards, 191 TransitionsBefore, 19 TransitionsAfterwards, 3892 CoEnabledTransitionPairs, 8 FixpointIterations, 80 TrivialSequentialCompositions, 84 ConcurrentSequentialCompositions, 21 TrivialYvCompositions, 31 ConcurrentYvCompositions, 14 ChoiceCompositions, 230 TotalNumberOfCompositions, 3818 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3760, independent: 3749, independent conditional: 0, independent unconditional: 3749, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2305, independent: 2299, independent conditional: 0, independent unconditional: 2299, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3760, independent: 1450, independent conditional: 0, independent unconditional: 1450, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 2305, unknown conditional: 0, unknown unconditional: 2305] , Statistics on independence cache: Total cache size (in pairs): 21, Positive cache size: 20, Positive conditional cache size: 0, Positive unconditional cache size: 20, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 21]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while CegarLoopForPetriNet was analyzing trace of length 23 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 22ms.. - TimeoutResultAtElement [Line: 107]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 23 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 22ms.. - TimeoutResultAtElement [Line: 107]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 23 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 22ms.. - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 23 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 22ms.. - TimeoutResultAtElement [Line: 91]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 23 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 22ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 270 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 816.7s, OverallIterations: 21, TraceHistogramMax: 5, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 39.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.7s, HoareTripleCheckerStatistics: 47 mSolverCounterUnknown, 1168 SdHoareTripleChecker+Valid, 13.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1168 mSDsluCounter, 37 SdHoareTripleChecker+Invalid, 12.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 1451 IncrementalHoareTripleChecker+Unchecked, 23 mSDsCounter, 200 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6988 IncrementalHoareTripleChecker+Invalid, 8686 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 200 mSolverCounterUnsat, 14 mSDtfsCounter, 6988 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 645 GetRequests, 309 SyntacticMatches, 17 SemanticMatches, 319 ConstructedPredicates, 8 IntricatePredicates, 1 DeprecatedPredicates, 1979 ImplicationChecksByTransitivity, 30.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15363occurred in iteration=20, InterpolantAutomatonStates: 248, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 351.5s InterpolantComputationTime, 545 NumberOfCodeBlocks, 541 NumberOfCodeBlocksAsserted, 50 NumberOfCheckSat, 698 ConstructedInterpolants, 23 QuantifiedInterpolants, 23319 SizeOfPredicates, 111 NumberOfNonLiveVariables, 2768 ConjunctsInSsa, 335 ConjunctsInUnsatCore, 46 InterpolantComputations, 10 PerfectInterpolantSequences, 69/384 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown